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Finding the Fourth Proportional to 166,639.52, 229,962.52 and 91,188

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Solution

The fourth proportional to 166,639.52, 229,962.52 and 91,188 is: 125,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,639.52 : 229,962.52 = 91,188 : x
  2. Step 2: Convert to fraction form
    166,639.52/229,962.52 = 91,188/x
  3. Step 3: Cross multiply
    166,639.52x = 229,962.52 × 91,188
  4. Step 4: Simplify right side
    166,639.52x = 20,969,822,273.76
  5. Step 5: Solve for x
    x = 20,969,822,273.76/166,639.52
  6. Step 6: Final answer
    x = 125,839.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.